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                <span class="article-type type-1 float-left">原</span>                <h1 class="title-article">MySQL_建立连接</h1>
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                                                                                                                                            <span class="time">2017年02月18日 17:19:49</span>
                    <a class="follow-nickName" href="https://me.csdn.net/S_gy_Zetrov" target="_blank">sgyzetrov</a>
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                                            <h1 id="因为项目的需要我极不情愿地从sql-server转到了mysql">因为项目的需要，我极不情愿地从sql server转到了mysql</h1>



<h2 id="之所以是极不情愿果然是因为在ssms的温暖怀抱里面呆得太久了啊人是会变懒的">之所以是<del>极不情愿</del>,果然是因为在<a href="http://baike.baidu.com/link?url=l6PMwCGIX1TvWxDum_4aYy3WmKamn37dSZ2r0vO-MrbHA1tZPXkGWRfrlzjvpdG4jh6xeqjgH6laP2FRPtQeAqm" rel="nofollow" data-token="e61e46d931761f5bd9efdda0006752ea">SSMS</a>的温暖怀抱里面呆得太久了啊，人是会变懒的！！！</h2>

<p>好吧既然用了mysql那就索性写点东西下来。 <br>
安装mysql我不具体描述了，总体就是下载.zip包-&gt;解压-&gt;设置环境变量-&gt;更改my.ini文件-&gt;新建<code>...\data</code>文件夹-&gt;管理员命令行配置mysql等等，网上这块的东西不少，而且还没有怎么过期（比如这篇<a href="http://jingyan.baidu.com/article/f3ad7d0ffc061a09c3345bf0.html" rel="nofollow" data-token="7884e78d6c56362677765f5592da9821">教程</a>） <br>
需要注意的是，我列出的这个百度经验到配置mysql都是没问题的，但后面安装mysql以及启动服务就有问题了！</p>

<p>这里不得不重申一下我的愤怒：<strong>网上教程多为重复转载及过期内容！作为一个更新换代如此之快以至于像“apa酒店”、“三星note7爆炸不给国人消费者道歉”等新闻都已经迅速降温消失殆尽的当今中国互联网，技术教程性的文章竟多数过期，真当检讨！</strong></p>

<p>好回到正题，关于我刚才列出的那个百度经验，有几点需要注意的：</p>

<ul>
<li>安装后启动mysql服务报错3534是因为没有初始化，而且初始化不要在<code>....\bin</code>文件夹中，先用<code>cd</code>命令退回到<code>...\system32</code>文件夹内再初始化+启动mysql服务 </li>
<li>解决方法为键入命令：  <br>
<ul><li>mysqld –remove 注：先删除已安装的mysql服务</li>
<li>mysqld –install 注：再重新安装mysql服务</li>
<li>mysqld –initialize 注： 一定要初始化</li>
<li>net start mysql</li>
<li>成功开启mysql服务</li></ul></li>
</ul>



<h2 id="我想写的就是开启服务后无法与mysql新建连接提示错误1045的解决办法">我想写的就是开启服务后无法与mysql新建连接提示错误1045的解决办法</h2>

<p>如下图所示</p>

<p><img src="https://ooo.0o0.ooo/2017/02/18/58a8096bd756d.png" alt="error 1045" title=""></p>

<p>错误1045本质上是密码错误禁止访问，我们通过修改root用户密码为自己的密码来达到重置的效果</p>

<p>经过一下午在网上的搜索，我终于总结出了解决方案：</p>

<ul>
<li><p>首先，在<code>my.ini</code>文件中加入<code>skip-grant-tables</code>我的my.ini文件是这么写的，记得‘#’要去掉，问题解决后要加上 <br>
<img src="https://ooo.0o0.ooo/2017/02/18/58a80a3d890fe.png" alt="我的my-ini文件截图.png" title=""></p></li>
<li><p>关闭mysql服务：<code>net stop mysql</code>接着重启它<code>net start mysql</code></p></li>
<li>输入<code>mysql -h localhost -u  root -p</code>来建立本机连接</li>
<li><p>随便输入什么密码，无所谓 <br>
<img src="https://ooo.0o0.ooo/2017/02/18/58a80bb42eb7a.png" alt="mysql命令行界面.png" title=""></p></li>
<li><p>键入<code>use mysql;</code>注：分号不能省！！！大概像这样，会返回database changed<img src="https://ooo.0o0.ooo/2017/02/18/58a80c3bedb13.png" alt="键入use.png" title=""></p></li>
<li>键入<code>update mysql.user set authentication_string=password("你设置的密码在这里输入") where user="root" ;</code> <br>
<ul><li>这里就显示出来网上教程的<strong>过期</strong>了，mysql数据库下已经没有password这个字段了，所以原来的<code>mysql&gt; UPDATE user SET password=PASSWORD(‘newpswd’)WHERE user=’root’;</code>命令不管用了！！</li>
<li>password字段在mysql5.7版本后已经变成了authentication_string！坑人吧~~~</li></ul></li>
<li>最后返回的信息应为这种，则已成功修改 <br>
<img src="https://ooo.0o0.ooo/2017/02/18/58a80deb96fce.png" alt="返回的信息.png" title=""></li>
<li>编辑my.ini文件注释掉skip-grant-tables这一行</li>
<li><p><img src="https://ooo.0o0.ooo/2017/02/18/58a80ed511e9b.png" alt="退出.png" title=""></p>

<p>然后关闭MySQL再启动，use <code>net stop mysql</code> and <code>net start mysql</code>，否则MySQL仍能免密码登录</p></li>
</ul>

<blockquote>
  <h2 id="检验效果">检验效果</h2>
  
  <p><img src="https://ooo.0o0.ooo/2017/02/18/58a80f61b2c82.png" alt="成功.png" title=""></p>
</blockquote>

<p><mark><font color="Tomato">至此，问题解决. peace out :)</font></mark></p>

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